Detection of Chlorodifluoroacetic Acid in Precipitation:  A Possible Product of Fluorocarbon Degradation

2000 ◽  
Vol 34 (2) ◽  
pp. 274-281 ◽  
Author(s):  
Jonathan W. Martin ◽  
James Franklin ◽  
Mark L. Hanson ◽  
Keith R. Solomon ◽  
Scott A. Mabury ◽  
...  
Keyword(s):  
Chlorodifluoroacetic Acid

35Cl NQR and Crystal Structure Studies of Salts of Chlorodifluoro- and Dichloroacetic Acid

1992 ◽  
Vol 47 (1-2) ◽  
pp. 241-253 ◽  
Author(s):  
Reha Basaran ◽  
Shi-qi Dou ◽  
Alarich Weiss
Keyword(s):  
Crystal Structure ◽  
Lattice Relaxation ◽  
Lattice Relaxation Time ◽  
Dichloroacetic Acid ◽  
Spin Lattice Relaxation ◽  
X Ray Diffraction ◽  
Spin Lattice ◽  
Chlorodifluoroacetic Acid ◽  
Reorientation Motion ◽  
Guanidinium Salt

AbstractThe 35Cl NQR spectra of several chlorodifluoroacetates were studied as a function of temperature, including the acid ClF2CCOOH. The cations were: Ammonium, guanidinium, paramethylanilinium. Also some acid salts M⊕ClF2CCOO⊖ • n - ClF2CCOOH ( n > l ) were studied by 35Cl NQR. The bleaching temperatures of the NQR signals were determined. In the para-methylanilinium salt and in the guanidinium salt a phase transition has been observed. The crystal structure of guanidinium chlorodifluoroacetate has been determined at room temperature (a = 1089 pm, 6 = 845 pm, c = 832 pm, space group Pnma, Z = 4). For comparison, guanidinium dichloroacetate was studied by 35Cl NQR and by X-ray diffraction, too: P21/c, Z = 4 , a = 804pm, b = 1202 pm, c = 1080 pm, ß = 131.58°. For guanidinium chlorodifluoroacetate and chlorodifluoroacetic acid, the 35Cl spin lattice relaxation time T1 and the line width have been followed up as a function of temperature. Therefrom, the activation energies of the reorientation motion of the group -CF2C1 have been determined to be 14 kJ • mol-1 (from T1) and 12.5 kJ • mol- 1 (from Δv) for the pure acid and 9.2 kJ • mol-1 and 8.8 kJ • mol-1 , respectively, for the guanidinium salt.

Structure and Internal Rotation of Molecules in Chlorodifluoroacetic Acid

2004 ◽  
Vol 45 (2) ◽  
pp. 315-318
Author(s):  
V. P. Feshin ◽  
I. V. Zolotarev ◽  
G. B. Soifer
Keyword(s):  
Internal Rotation ◽  
Chlorodifluoroacetic Acid

Electron induced reactions in molecular nanofilms of chlorodifluoroacetic acid (CClF2COOH): Desorption of fragment anions and formation of CO2

2010 ◽  
Vol 133 (19) ◽  
pp. 194503 ◽  
Author(s):  
Mario Orzol ◽  
Constanze König-Lehmann ◽  
Eugen Illenberger ◽  
Janina Kopyra
Keyword(s):  
Chlorodifluoroacetic Acid

Chlorodifluoroacetic acid fate and toxicity to the macrophytesLemna gibba, Myriophyllum spicatum, andMyriophyllum sibiricumin aquatic microcosms

2001 ◽  
Vol 20 (12) ◽  
pp. 2758-2767 ◽  
Author(s):  
Mark L. Hanson ◽  
Paul K. Sibley ◽  
Scott A. Mabury ◽  
Derek C. Muir ◽  
Keith R. Solomon
Keyword(s):  
Myriophyllum Spicatum ◽  
Aquatic Microcosms ◽  
Chlorodifluoroacetic Acid
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